Improvement



UNITED STATES AT FFICE JOHN D. TOPPIN, (UNITED STATES NAVY,) OF NEWARK, NE\V JERSEY.

IMPRGVEMENT IN STEAM-JET PUMPS.

Specification forming part of Letters Patent N0. lh, dated December 1T, i872.

To all whom it may concern:

Be it known that I, JOHN D. TOPPIN, of the city of Newark, State of New Jersey, have invented certain new and useful Improvements in Steam-J et or Ejector-Punips, and declare the following to be a full and exact description of the same, reference being had to the accompanying drawing, in which- Figure lis a vertical cross-section of my improved pump; Fig. 2 is a side elevation of the same; and Figs. 3 and 4 are detached views of the direct-acting steam-pipe and its casing.

In the construction of pumps where steam is used as a direct means of ejecting the water or other iiuid it is desirable to have as few obstructions in the pump-chamber as possible in order that the water may not be impeded in its passage through the same; and in order that the steam may not be condensed before acting upon the water it is important that the ejection or direct-actin g steam-pipe where it enters the pump-chamber should be protected from the cooling action of the water by a coating of some non-conducting substance. As foreign matters, such as chips, dirt, Svc., are liable to enter and obstruct the pump-chamber, or the pipes connecting therewith, it is necessary also to provide convenient and .efficient means for removing the same and entirely clearing the pump-chamber of any substances that may have lodged therein.

In the arrangements heretofore in use, (I refer more particularly to the pump of N. S. Chappel, patented August 29, 1865,) which provide a means of reversing the direction of the current of steam so as to clear the pump of obstructions, the construction is necessarily such as to materially clog the pump-chamber, the device for reversing the direction of the current of steam being placed inside of the same, and any attempt to provide the ejectionpipe in such pumps with a coating of non-conducting substance would seriously if not entirely obstruct the pump-chamber.

My improvements relate, first, to the more easy removal of temporary obstructions in the pump-chamber and connecting-pipes by reversing the direction of the current of steam by means of a two-way cock or double-seated valve placed outside of the pump-chamber, thereby causing the steam to enter the pumpchamber by another passage, situated above the nozzle of the direct-acting steam-pipe, and blowing in the opposite direction; second, to providing the jet or direct-acting steam-pipe, where it enters the pump-chamber, with a peculiarly shaped and constructed casing, which will admit of a non-conducting substance being placed between such casing and the steampipe, and at the same time be made of such form as to offer the least possible resistance to the iioW of water through the pump-chamber, therebyincreasing the quantity of water raised relatively to the steam consumed; third, to the form and construction of the pump-chamber, which I make especially to avoid sharp or abrupt corners or any obstructions which would resist the flow of the water, so that the velocity imparted by the action of an impinging jet of steam may not be retarded or interrupted, as has been the case in pumps of this character heretofore in use.

In order to enable those skilled in the art to make and use my improved ejector-pump, I will proceed to describe its construction and operation.

In the drawing, Arepresents the main pumpchamber. B is the direct-acting steam-pipe. G is a two-way cock or double-seated valve, which also acts as a stop-cock for letting on and shutting oft' the steam from the boiler, when desired.` d is a reverse-acting steampipe, for the purpose of introducing the steam into the pump-chamber above the direct-actin g pipe B in order to remove any obstructions that may lodge in the chamberA or adjoining' pipes, and is connected with the double-seated valve C. E is a gate-valve for closing the delivery-pipe when the pump is not working. L is a casing placed around the nozzle of the direct-acting steam-pipe B, more particularly shown in Figs. 3 and 4, being composed of two shell-like halves, so as to fit closely around the mouth of the pipe B and against the side of the chamber A in order to prevent any water coming in contact with the pipe B, and made 1n the form of a cut-water, as shown in Fig. 3.

When the pump is ready for use a steampipe, connecting with the boiler, is attached to the iange For the two-'way cock, which also acts as a stop-cock. A pipe, connecting with the well or other body of water it is de- 2 ESLRS sired to pump, is attached to the lower end of the pump at H, and a delivery-pipe is attached to the upper end at K. l

When it is desired to set the pump in operation, assuming sufficient steam in the boiler for that purpose, the valve-gate E is opened and the two-way cock turned into the position shown in Fig. 1, when, the steam being let on, it will blow through the pipe B into the pumpchamber A, in the direction indicated by the arrows, producing a partial vacuum below the steam-jet, causing the Water to rise and 110W through the pump and driving it into the delivery-pipe. Should any substance too large to pass get into the pump-chamber or pipes connected therewith, by turning the two-way cock to the opposite position the steam will pass through the reverse passage d, and the motion-of the water being forcibly reversed, any obstructions will be washed out of the pump back into the Well and removed from further harm.

It will be perceived that the construction and peculiar form of my pump are such that the water receives the full force of the steamjet without being retarded in its passage through the chamber A by any obstructions running across said chamber, asis the case in the ejector of N. S. Ghappel, aboveueferred to, and the casing L, which surrounds the ejection or direct-actin g steam-pipe B, so as to allow space for the interposition of a non-conducting substance, is constructed in the form of a cut-water, thereby offering slight resistance or obstruction to the fluid passing through the chamberA. The reverse-actin g steam-pipe d is also placed in such a position as to offer no resistance to the ow of water or other Huid, and being placed at the upper part of the chamber A and above the direct-acting pipe B, the action of the steam coming from it is more effective in clearing the pump of obstructions, while its connection with the double-seated valve C admits of almost instantaneously reversing the direction of the force of steam in the pump-chamber.

I do not claim the use of a jet of steam for the purpose of pumping water or other uids, or providing the steam-nozzle with' a casing containing non-conducting substance; but

What I do claim as my invention, and desire to secure by Letters Patent, is-

1. A steam-ejector pump, having a two-wa y cock or double-seated valve placed outside ot' the pump-chamber, substantially as and for the purposes shown and described.

2. The casing L,"of cut-water form, placed around the direct-acting steam-nozzle, substantially as and for the purposes shown and dcscribed.

3. The arrangement and construction of the pump chamber A with the reverse acting steam-pipe entering above the nozzle of the direct-acting steam-pipe, substantially as and for the purposes shown and described.

JOHN D. TOPPN.

Witnesses:

A. l?. YOUNG, y IsAAc GASTON. 

